Experimental study on mechanical properties of pre-coated reinforced brick-mixed recycled coarse aggregate concrete
In this study,low water-cement ratio composite cementified material was used to precoat brick-con-crete recycled coarse aggregate,and a two-stage mixing method was proposed to precoat brick-concrete recy-cled coarse aggregate and produce recycled concrete at the same time.The physical and mechanical properties of five kinds of concrete were studied experimentally.The results show that the 28-day compressive strength and splitting tensile strength of pre-coated concrete are 9.9%and 7.7%higher than those of uncoated concrete when the same total cementing material is used.The two-stage mixing method has the most significant effect on improving the cracking resistance of brick-concrete reclaimed coarse aggregate,and the pre-coated brick-concrete reclaimed coarse aggregate has the most significant effect on improving the unstable fracture tough-ness of brick-concrete reclaimed coarse aggregate.
万方数据
维普
